Cannot get tutorial last mission.  Marine keeps getting himself killed, but character is fine.  Defense area does not seem to work when character interacts with blue icons.

this is very disappointing. Cant figure out what I am doing.  Program bug? or my computer.  Seems fine through first four tutorial mission. Gives no if marine is killed!  Early

alphas for this LAST tutorial mission was presented differently.  Marine stayed in protective defensive ring and did not jump out to attack everything, hence he dies mission over!!